pedroaxl · February 28, 2016 05:21 · Nov 4, 2013 · Nov 4, 2013
diff --git a/uploader.js.coffee b/uploader.js.coffee
@@ -26,7 +26,6 @@ SirTrevor.fileUploader = (block, file, success, error) ->
     data: {
       file_name: file.name
       file_type: file.type
-      md5: file.md5
     }
     type: 'GET'
     error: callbackError

diff --git a/config_controller.rb b/config_controller.rb
@@ -0,0 +1,22 @@
+# As we cant make Secret Access Key open, this method generates a signature that will allow the user to upload this 
+# file specifically 
+
+  def sign_s3
+    bucket_name = 'mailee-images'
+    original_name = params['file_name']
+    original_extension = original_name.split('.').last
+    mime_type = params['file_type']
+    object_name = Time.now.to_f.to_s.gsub('.','') + '.' + original_extension
+    #TODO return unless mime_type is valid
+    date = Time.now.utc.iso8601.gsub(/-|:/,'')
+    amazon_headers = ["x-amz-acl:public-read","x-amz-date:#{date}"] # set the public read permission on the uploaded file
+    string_to_sign = "PUT\n\n#{mime_type}\n\n#{amazon_headers[0]}\n#{amazon_headers[1]}\n/#{bucket_name}/#{current_client.id}/#{object_name}";
+    signature = Base64.strict_encode64(OpenSSL::HMAC.digest('sha1',  APP_CONFIG['aws_secret_access_key'], string_to_sign))
+    path = "https://s3.amazonaws.com/#{bucket_name}/#{current_client.id}/#{object_name}"
+    r = {
+      signature:  "AWS #{APP_CONFIG['aws_access_key_id']}:#{signature}",
+      date: date,
+      url: path,
+    }
+    render json: r
+  end
diff --git a/uploader.js.coffee b/uploader.js.coffee
@@ -0,0 +1,53 @@
+#
+#*   Sir Trevor Uploader
+#*   Generic Upload implementation that can be extended for blocks
+#
+#*   modified by @pedroaxl to upload directly to S3
+
+SirTrevor.fileUploader = (block, file, success, error) ->
+  SirTrevor.EventBus.trigger "onUploadStart"
+  uid = [block.blockID, (new Date()).getTime(), "raw"].join("-")
+
+  block.resetMessages()
+  callbackSuccess = (data, textStatus, jqXHR) ->
+    SirTrevor.log "Upload callback called"
+    SirTrevor.EventBus.trigger "onUploadStop"
+    # once the PUT response from Amazon comes empty, I had to change this line to include the url
+    _.bind(success, block) {file: this.url}  if not _.isUndefined(success) and _.isFunction(success)
+
+  callbackError = (jqXHR, status, errorThrown) ->
+    SirTrevor.log "Upload callback error called"
+    SirTrevor.EventBus.trigger "onUploadStop"
+    _.bind(error, block) status  if not _.isUndefined(error) and _.isFunction(error)
+
+  $.ajax(
+    url: '/config/sign_s3'
+    #   before sending to Amazon using PUT, it makes a req to get the signature that will allow the upload
+    data: {
+      file_name: file.name
+      file_type: file.type
+      md5: file.md5
+    }
+    type: 'GET'
+    error: callbackError
+    success: (data, textStatus, jqXHR) ->
+      xhr = $.ajax(
+        url: data.url
+        contentType: file.type
+        crossDomain: true
+        data: file
+        processData: false
+        headers: {
+          'Content-MD5': file.md5
+          'Authorization': data.signature
+          'x-amz-date': data.date
+          'x-amz-acl': 'public-read' # set the public read permission on the uploaded file
+        }
+        type: "PUT"
+        success: callbackSuccess
+      )
+      block.addQueuedItem uid, xhr
+      xhr.done(callbackSuccess).fail(callbackError).always _.bind(block.removeQueuedItem, block, uid)
+      xhr
+  )
+